English

The Mu3e experiment: Toward the construction of an HV-MAPS vertex detector

Instrumentation and Detectors 2021-06-08 v1 High Energy Physics - Experiment

Abstract

The Mu3e experiment searches for the lepton flavor violating decay μ+  e+ e+ e\mu^+~\rightarrow~e^+~e^+~e^- with an ultimate aimed sensitivity of 1 event in 101610^{16} decays. This goal can only be achieved by reducing the material budget per tracking layer to X/X00.1%X/X_0 \approx 0.1 \%. High-Voltage Monolithic Active Pixel Sensors (HV-MAPS) which are thinned to 50 μm50\ \mu m serve as sensors. Gaseous helium is chosen as coolant. Results of recent studies related to the sensor prototypes, the helium cooling, and module prototyping are presented. The recent chip submission MuPix10 has proven its functionality regarding efficiency and time resolution. The helium cooling system for the inner tracker could be verified using a full-scale prototype. A complete prototype equipped with MuPix10 chips will be tested inside the Mu3e magnet in summer 2021.

Keywords

Cite

@article{arxiv.2106.03534,
  title  = {The Mu3e experiment: Toward the construction of an HV-MAPS vertex detector},
  author = {Thomas Rudzki and Heiko Augustin and Marin Deflorin and Sebastian Dittmeier and Florian Frauen and David Maximilian Immig and Dohun Kim and Frank Meier Aeschbacher and Annie Meneses González and Marius Menzel and Ivan Perić and Sebastian Preuß and André Schöning and Luigi Vigani and Alena Weber and Benjamin Weinläder},
  journal= {arXiv preprint arXiv:2106.03534},
  year   = {2021}
}

Comments

Talk presented at the International Workshop on Future Linear Colliders (LCWS2021), 15-18 March 2021. C21-03-15.1